Power-producing system



Fbp 1924; 1,482,942l

w. H. NIELD POWER PRODUC I NG S YS TEM Filed Deo. 8, 1919 "Ill NLM# I.. I

.Hw i was" l n1- *Ql Wajm" @VEBVEY MWJM A 'y JIM @my Patented Feb, 5, 1924;

,UNITED vSTATES,

1,482,94-zjY PATENT orales;-

WILLIAM HERBERT NIELI, or srocKroRn ENGLAND, .'AssIGNoR or ONE-HALE lro WILLIAM MELLANL, or MANCHESTER, ENGLAND.

POWER-PRODUCING SYSTEM.

Application' led. December 8, 1919. Serial No. 343,272.

To all whom it may concern: Be it known that I, WILLIAM HERBERT NIELD, subject of the King of Great Britain, residing at Stockport, in the county of Chester and Kingdom of England, have invented certain new and useful Improvements in Power-Producing Systems, of which the following is a specification, I The present invention relates to an improved power producingsystem'.

An object of this invention is to get a greater output of energy from the coal fuel than has hithert-o been possible by burning the coal under a boiler of an ordinary grate.

A further object of this invention is to avoid the lloss by combustion of valuable byproducts such as tar, ammoniaLtoluol and the like.

The invention is more particularly described with reference to the accompanying diagrammatic drawing. l

In the drawings the invention 'is shown at applied to a boiler taken by way of example but theinvention is applicable to any type of heating furnaces using coal as fuel.

Fuel such as coal, 1, is fed to a hopper`2, and from thence passes to a tube 3, in which operates a' continuously moving conveyor 4, driven from a source of power in any desired manner. The tube y3 pro-` jects into the furnace and is subject to 4,the heat of the fire bed 6, on allsides. Conseuently the coal in this tube will be partlally coked and will fall on the moving grate 7, in a Apartially coked condition.

Thisggratemay be a chain grate moving in' the direction of the. arrow 8, so that ash automatically passes over the dumping plate 9, and is discharged from the furnace.`

The gases evolved 'during the coking of the fuel in the tube 3, pass up a stack 10, and are not passed into ythe furnace where the valuable by-products would also be burnt. These are therefore aspirated into the stack 10, by means of a fan 11, and are then passed through a condenser12, which may be of any usual form for instance con` taining liquid tar-which is adapted to be drawn olf by a pipe 13 as required. This will remove a large portion of the tar from the gases. The gases then pass into a pipe therefor.

14 and upwards through a condenser 15 in an opposite direction to a stream of water passing downwards through a circulating pipe 16. Ammonia liquor can be drawn off by meansV of the stop cock 17. The gases having been deprived of ammonia then pass into a pipe 18 and thence through a con` denser 1 9 through which heavy oil is being circulated to remove t-he liquid hydrocar' bonsfrom. the gas.

The condensers 15 and 19 are diagrammatic only and any apparatus may besubstituted therefor .for removing the desired products from the gas.

The gas after having been stripped of all these valuable products can then be passed, by means of a conduit 2O and cock 21 to a burner 22, to be burnt in the furnace -as an 'additional source of heat energy Means may be provided to short circuit,

-when desired, the condensing apparatus 19 by means of a cock 23.

I declare that what I claim is A fuel consuming device comprising -a furnace for industrial use including a grate to consume the fuel, a tube in the combusA tion chamber of the furnace, means 'to pass fuel continuously into said-tube and out of the inner end on to said grate,means to move the fuel passing out of said tube-on to said grate along the grate in an opposite direction to the direction of its passage through thetube, means' to discharge ash from the furnace', means to draw olf gases from the tube evolved in the absence of air, means to remove condensation products .from the gases, means to pass the stripped gases back to the furnace and a burner in the combustion chamber to burn said stripped gases below the tube to coke the fuel therein previous to its passing on to the grate.

In witness whereof, I have hereunto signed my name'this 10th day of October,

1919, in thepres'ence of two subscribing witnesses. 

